DescriptionSchott glass main advantages compared with quartz glass bulb:1. optical transmission . Good optical transmission makes it have moreluminous flux than quartz at the same power (watt). So it is brighter.2. thermal expansion coefficient . Its thermal expansion coefficient is muchclosed to that of molybdenum. So it works perfectly without the help of themolybdenum belt.3. lamp protecting. For schott glass can filter out UV radiation, auto lamp canbe protected to a certain extent.Disadvantage: it can not meet with cold water when it is working, or, it will blast.

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Schott glass main advantages compared with quartz glass bulb: 1. optical transmission . Good optical transmission makes it have more luminous flux than quartz at the same power (watt). So it is brighter.2. thermal expansion coefficient . Its thermal expansion coefficient is much closed to that of molybdenum. So it works perfectly without the help of the molybdenum belt.3. lamp protecting. For schott glass can filter out UV radiation, auto lamp can be protected to a certain extent.Disadvantage: it can not meet with cold water when it is working, or, it will blast.